src/ngircd/irc-info.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2009 Alexander Barton (alex@barton.de)
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  * Please read the file COPYING, README and AUTHORS for more information.
  10  *
  11  * IRC info commands
  12  */
  13
  14
  15 #include "portab.h"
  16
  17 #include "imp.h"
  18 #include <assert.h>
  19 #include <errno.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <strings.h>
  24
  25 #include "ngircd.h"
  26 #include "conn-func.h"
  27 #include "conn-zip.h"
  28 #include "client.h"
  29 #include "channel.h"
  30 #include "resolve.h"
  31 #include "conf.h"
  32 #include "defines.h"
  33 #include "log.h"
  34 #include "messages.h"
  35 #include "match.h"
  36 #include "tool.h"
  37 #include "parse.h"
  38 #include "irc-write.h"
  39
  40 #include "exp.h"
  41 #include "irc-info.h"
  42
  43
  44 GLOBAL bool
  45 IRC_ADMIN(CLIENT *Client, REQUEST *Req )
  46 {
  47         CLIENT *target, *prefix;
  48
  49         assert( Client != NULL );
  50         assert( Req != NULL );
  51
  52         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  53
  54         /* find target ... */
  55         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
  56         else target = Client_ThisServer( );
  57
  58         /* find Prefix */
  59         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
  60         else prefix = Client;
  61         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
  62
  63         /* forwad message to another server? */
  64         if( target != Client_ThisServer( ))
  65         {
  66                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
  67
  68                 /* forward */
  69                 IRC_WriteStrClientPrefix( target, prefix, "ADMIN %s", Req->argv[0] );
  70                 return CONNECTED;
  71         }
  72
  73         /* mit Versionsinfo antworten */
  74         if( ! IRC_WriteStrClient( Client, RPL_ADMINME_MSG, Client_ID( prefix ), Conf_ServerName )) return DISCONNECTED;
  75         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC1_MSG, Client_ID( prefix ), Conf_ServerAdmin1 )) return DISCONNECTED;
  76         if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC2_MSG, Client_ID( prefix ), Conf_ServerAdmin2 )) return DISCONNECTED;
  77         if( ! IRC_WriteStrClient( Client, RPL_ADMINEMAIL_MSG, Client_ID( prefix ), Conf_ServerAdminMail )) return DISCONNECTED;
  78
  79         IRC_SetPenalty( Client, 1 );
  80         return CONNECTED;
  81 } /* IRC_ADMIN */
  82
  83
  84 /**
  85  * Handler for the IRC command "INFO".
  86  * See RFC 2812 section 3.4.10.
  87  */
  88 GLOBAL bool
  89 IRC_INFO(CLIENT * Client, REQUEST * Req)
  90 {
  91         CLIENT *target, *prefix;
  92         char msg[510];
  93
  94         assert(Client != NULL);
  95         assert(Req != NULL);
  96
  97         /* Wrong number of parameters? */
  98         if (Req->argc > 1)
  99                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 100                                           Client_ID(Client), Req->command);
 101
 102         /* Determine prefix */
 103         if (Client_Type(Client) == CLIENT_SERVER)
 104                 prefix = Client_Search(Req->prefix);
 105         else
 106                 prefix = Client;
 107         if (!prefix)
 108                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 109                                           Client_ID(Client), Req->prefix);
 110
 111         /* Look for a target */
 112         if (Req->argc > 0)
 113                 target = Client_Search(Req->argv[0]);
 114         else
 115                 target = Client_ThisServer();
 116
 117         /* Make sure that the target is a server */
 118         if (target && Client_Type(target) != CLIENT_SERVER)
 119                 target = Client_Introducer(target);
 120
 121         if (!target)
 122                 return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
 123                                           Client_ID(prefix), Req->argv[0]);
 124
 125         /* Pass on to another server? */
 126         if (target != Client_ThisServer()) {
 127                 IRC_WriteStrClientPrefix(target, prefix, "INFO %s",
 128                                          Req->argv[0]);
 129                 return CONNECTED;
 130         }
 131
 132         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix),
 133                                 NGIRCd_Version))
 134                 return DISCONNECTED;
 135
 136 #if defined(__DATE__) && defined(__TIME__)
 137         snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__);
 138         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 139                 return DISCONNECTED;
 140 #endif
 141
 142         strlcpy(msg, "On-line since ", sizeof(msg));
 143         strlcat(msg, NGIRCd_StartStr, sizeof(msg));
 144         if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg))
 145                 return DISCONNECTED;
 146
 147         if (!IRC_WriteStrClient(Client, RPL_ENDOFINFO_MSG, Client_ID(prefix)))
 148                 return DISCONNECTED;
 149
 150         IRC_SetPenalty(Client, 2);
 151         return CONNECTED;
 152 } /* IRC_INFO */
 153
 154
 155 GLOBAL bool
 156 IRC_ISON( CLIENT *Client, REQUEST *Req )
 157 {
 158         char rpl[COMMAND_LEN];
 159         CLIENT *c;
 160         char *ptr;
 161         int i;
 162
 163         assert( Client != NULL );
 164         assert( Req != NULL );
 165
 166         /* Falsche Anzahl Parameter? */
 167         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 168
 169         strlcpy( rpl, RPL_ISON_MSG, sizeof rpl );
 170         for( i = 0; i < Req->argc; i++ )
 171         {
 172                 ptr = strtok( Req->argv[i], " " );
 173                 while( ptr )
 174                 {
 175                         ngt_TrimStr( ptr );
 176                         c = Client_Search( ptr );
 177                         if( c && ( Client_Type( c ) == CLIENT_USER ))
 178                         {
 179                                 /* Dieser Nick ist "online" */
 180                                 strlcat( rpl, ptr, sizeof( rpl ));
 181                                 strlcat( rpl, " ", sizeof( rpl ));
 182                         }
 183                         ptr = strtok( NULL, " " );
 184                 }
 185         }
 186         ngt_TrimLastChr(rpl, ' ');
 187
 188         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 189 } /* IRC_ISON */
 190
 191
 192 GLOBAL bool
 193 IRC_LINKS( CLIENT *Client, REQUEST *Req )
 194 {
 195         CLIENT *target, *from, *c;
 196         char *mask;
 197
 198         assert( Client != NULL );
 199         assert( Req != NULL );
 200
 201         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 202
 203         /* Server-Mask ermitteln */
 204         if( Req->argc > 0 ) mask = Req->argv[Req->argc - 1];
 205         else mask = "*";
 206
 207         /* Absender ermitteln */
 208         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 209         else from = Client;
 210         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 211
 212         /* An anderen Server forwarden? */
 213         if( Req->argc == 2 )
 214         {
 215                 target = Client_Search( Req->argv[0] );
 216                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 217                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LINKS %s %s", Req->argv[0], Req->argv[1] );
 218         }
 219
 220         /* Wer ist der Absender? */
 221         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 222         else target = Client;
 223         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 224
 225         c = Client_First( );
 226         while( c )
 227         {
 228                 if( Client_Type( c ) == CLIENT_SERVER )
 229                 {
 230                         if( ! IRC_WriteStrClient( target, RPL_LINKS_MSG, Client_ID( target ), Client_ID( c ), Client_ID( Client_TopServer( c ) ? Client_TopServer( c ) : Client_ThisServer( )), Client_Hops( c ), Client_Info( c ))) return DISCONNECTED;
 231                 }
 232                 c = Client_Next( c );
 233         }
 234
 235         IRC_SetPenalty( target, 1 );
 236         return IRC_WriteStrClient( target, RPL_ENDOFLINKS_MSG, Client_ID( target ), mask );
 237 } /* IRC_LINKS */
 238
 239
 240 GLOBAL bool
 241 IRC_LUSERS( CLIENT *Client, REQUEST *Req )
 242 {
 243         CLIENT *target, *from;
 244
 245         assert( Client != NULL );
 246         assert( Req != NULL );
 247
 248         if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 249
 250         /* Absender ermitteln */
 251         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 252         else from = Client;
 253         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 254
 255         /* An anderen Server forwarden? */
 256         if( Req->argc == 2 )
 257         {
 258                 target = Client_Search( Req->argv[1] );
 259                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 260                 else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LUSERS %s %s", Req->argv[0], Req->argv[1] );
 261         }
 262
 263         /* Wer ist der Absender? */
 264         if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
 265         else target = Client;
 266         if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 267
 268         IRC_Send_LUSERS( target );
 269
 270         IRC_SetPenalty( target, 1 );
 271         return CONNECTED;
 272 } /* IRC_LUSERS */
 273
 274
 275 /**
 276  * Handler for the IRC command "SERVLIST".
 277  * List registered services, see RFC 2811, section 3.5.1: the syntax is
 278  * "SERVLIST [<mask> [<type>]]".
 279  */
 280 GLOBAL bool
 281 IRC_SERVLIST(CLIENT *Client, REQUEST *Req)
 282 {
 283         CLIENT *c;
 284
 285         assert(Client != NULL);
 286         assert(Req != NULL);
 287
 288         if (Req->argc > 2)
 289                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 290                                           Client_ID(Client), Req->command);
 291
 292         if (Req->argc < 2 || strcmp(Req->argv[1], "0") == 0) {
 293                 for (c = Client_First(); c!= NULL; c = Client_Next(c)) {
 294                         if (Client_Type(c) != CLIENT_SERVICE)
 295                                 continue;
 296                         if (Req->argc > 0 && !MatchCaseInsensitive(Req->argv[0],
 297                                                                   Client_ID(c)))
 298                                 continue;
 299                         if (!IRC_WriteStrClient(Client, RPL_SERVLIST_MSG,
 300                                         Client_ID(Client), Client_Mask(c),
 301                                         Client_Mask(Client_Introducer(c)), "*",
 302                                         0, Client_Hops(c), Client_Info(c)))
 303                                 return DISCONNECTED;
 304                 }
 305         }
 306
 307         return IRC_WriteStrClient(Client, RPL_SERVLISTEND_MSG, Client_ID(Client),
 308                                   Req->argc > 0 ? Req->argv[0] : "*",
 309                                   Req->argc > 1 ? Req->argv[1] : "0");
 310 } /* IRC_SERVLIST */
 311
 312
 313 GLOBAL bool
 314 IRC_MOTD( CLIENT *Client, REQUEST *Req )
 315 {
 316         CLIENT *from, *target;
 317
 318         assert( Client != NULL );
 319         assert( Req != NULL );
 320
 321         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 322
 323         /* From aus Prefix ermitteln */
 324         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 325         else from = Client;
 326         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 327
 328         if( Req->argc == 1 )
 329         {
 330                 /* forward? */
 331                 target = Client_Search( Req->argv[0] );
 332                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 333
 334                 if( target != Client_ThisServer( ))
 335                 {
 336                         /* Ok, anderer Server ist das Ziel: forwarden */
 337                         return IRC_WriteStrClientPrefix( target, from, "MOTD %s", Req->argv[0] );
 338                 }
 339         }
 340
 341         IRC_SetPenalty( from, 3 );
 342         return IRC_Show_MOTD( from );
 343 } /* IRC_MOTD */
 344
 345
 346 GLOBAL bool
 347 IRC_NAMES( CLIENT *Client, REQUEST *Req )
 348 {
 349         char rpl[COMMAND_LEN], *ptr;
 350         CLIENT *target, *from, *c;
 351         CHANNEL *chan;
 352
 353         assert( Client != NULL );
 354         assert( Req != NULL );
 355
 356         if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 357
 358         /* use prefix to determine "From" */
 359         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 360         else from = Client;
 361         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 362
 363         if( Req->argc == 2 )
 364         {
 365                 /* forward to another server? */
 366                 target = Client_Search( Req->argv[1] );
 367                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] );
 368
 369                 if( target != Client_ThisServer( )) {
 370                         /* target is another server, forward */
 371                         return IRC_WriteStrClientPrefix( target, from, "NAMES %s :%s", Req->argv[0], Req->argv[1] );
 372                 }
 373         }
 374
 375         if( Req->argc > 0 )
 376         {
 377                 /* bestimmte Channels durchgehen */
 378                 ptr = strtok( Req->argv[0], "," );
 379                 while( ptr )
 380                 {
 381                         chan = Channel_Search( ptr );
 382                         if( chan )
 383                         {
 384                                 /* print name */
 385                                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 386                         }
 387                         if( ! IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), ptr )) return DISCONNECTED;
 388
 389                         /* get next channel name */
 390                         ptr = strtok( NULL, "," );
 391                 }
 392                 return CONNECTED;
 393         }
 394
 395         chan = Channel_First( );
 396         while( chan )
 397         {
 398                 if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
 399
 400                 chan = Channel_Next( chan );
 401         }
 402
 403         /* Now print all clients which are not in any channel */
 404         c = Client_First( );
 405         snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 406         while( c )
 407         {
 408                 if(( Client_Type( c ) == CLIENT_USER ) && ( Channel_FirstChannelOf( c ) == NULL ) && ( ! strchr( Client_Modes( c ), 'i' )))
 409                 {
 410                         /* its a user, concatenate ... */
 411                         if( rpl[strlen( rpl ) - 1] != ':' ) strlcat( rpl, " ", sizeof( rpl ));
 412                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 413
 414                         if( strlen( rpl ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
 415                         {
 416                                 /* Line is gwoing too long, send now */
 417                                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 418                                 snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" );
 419                         }
 420                 }
 421
 422                 c = Client_Next( c );
 423         }
 424         if( rpl[strlen( rpl ) - 1] != ':')
 425         {
 426                 if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
 427         }
 428
 429         IRC_SetPenalty( from, 1 );
 430         return IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), "*" );
 431 } /* IRC_NAMES */
 432
 433
 434 static unsigned int
 435 t_diff(time_t *t, const time_t d)
 436 {
 437         time_t diff, remain;
 438
 439         diff = *t / d;
 440         remain = diff * d;
 441         *t -= remain;
 442
 443         return (unsigned int)diff;
 444 }
 445
 446
 447 static unsigned int
 448 uptime_days(time_t *now)
 449 {
 450         return t_diff(now, 60 * 60 * 24);
 451 }
 452
 453
 454 static unsigned int
 455 uptime_hrs(time_t *now)
 456 {
 457         return t_diff(now, 60 * 60);
 458 }
 459
 460
 461 static unsigned int
 462 uptime_mins(time_t *now)
 463 {
 464          return t_diff(now, 60);
 465 }
 466
 467
 468 /**
 469  * Handler for the IRC command "STATS".
 470  * See RFC 2812 section 3.4.4.
 471  */
 472 GLOBAL bool
 473 IRC_STATS( CLIENT *Client, REQUEST *Req )
 474 {
 475         CLIENT *from, *target, *cl;
 476         CONN_ID con;
 477         char query;
 478         COMMAND *cmd;
 479         time_t time_now;
 480         unsigned int days, hrs, mins;
 481
 482         assert(Client != NULL);
 483         assert(Req != NULL);
 484
 485         if (Req->argc > 2)
 486                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 487                                           Client_ID(Client), Req->command);
 488
 489         /* use prefix to determine "From" */
 490         if (Client_Type(Client) == CLIENT_SERVER)
 491                 from = Client_Search(Req->prefix);
 492         else
 493                 from = Client;
 494
 495         if (!from)
 496                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 497                                           Client_ID(Client), Req->prefix);
 498
 499         if (Req->argc == 2) {
 500                 /* forward to another server? */
 501                 target = Client_Search(Req->argv[1]);
 502                 if ((!target) || (Client_Type(target) != CLIENT_SERVER))
 503                         return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
 504                                                  Client_ID(from), Req->argv[1]);
 505
 506                 if (target != Client_ThisServer()) {
 507                         /* forward to another server */
 508                         return IRC_WriteStrClientPrefix(target, from,
 509                                      "STATS %s %s", Req->argv[0], Req->argv[1]);
 510                 }
 511         }
 512
 513         if (Req->argc > 0)
 514                 query = Req->argv[0][0] ? Req->argv[0][0] : '*';
 515         else
 516                 query = '*';
 517
 518         switch (query) {
 519         case 'l':       /* Link status (servers and own link) */
 520         case 'L':
 521                 time_now = time(NULL);
 522                 for (con = Conn_First(); con != NONE; con = Conn_Next(con)) {
 523                         cl = Conn_GetClient(con);
 524                         if (!cl)
 525                                 continue;
 526                         if ((Client_Type(cl) == CLIENT_SERVER)
 527                             || (cl == Client)) {
 528                                 /* Server link or our own connection */
 529 #ifdef ZLIB
 530                                 if (Conn_Options(con) & CONN_ZIP) {
 531                                         if (!IRC_WriteStrClient
 532                                             (from, RPL_STATSLINKINFOZIP_MSG,
 533                                              Client_ID(from), Client_Mask(cl),
 534                                              Conn_SendQ(con), Conn_SendMsg(con),
 535                                              Zip_SendBytes(con),
 536                                              Conn_SendBytes(con),
 537                                              Conn_RecvMsg(con),
 538                                              Zip_RecvBytes(con),
 539                                              Conn_RecvBytes(con),
 540                                              (long)(time_now - Conn_StartTime(con))))
 541                                                 return DISCONNECTED;
 542                                         continue;
 543                                 }
 544 #endif
 545                                 if (!IRC_WriteStrClient
 546                                     (from, RPL_STATSLINKINFO_MSG,
 547                                      Client_ID(from), Client_Mask(cl),
 548                                      Conn_SendQ(con), Conn_SendMsg(con),
 549                                      Conn_SendBytes(con), Conn_RecvMsg(con),
 550                                      Conn_RecvBytes(con),
 551                                      (long)(time_now - Conn_StartTime(con))))
 552                                         return DISCONNECTED;
 553                         }
 554                 }
 555                 break;
 556         case 'm':       /* IRC command status (usage count) */
 557         case 'M':
 558                 cmd = Parse_GetCommandStruct();
 559                 for (; cmd->name; cmd++) {
 560                         if (cmd->lcount == 0 && cmd->rcount == 0)
 561                                 continue;
 562                         if (!IRC_WriteStrClient
 563                             (from, RPL_STATSCOMMANDS_MSG, Client_ID(from),
 564                              cmd->name, cmd->lcount, cmd->bytes, cmd->rcount))
 565                                 return DISCONNECTED;
 566                 }
 567                 break;
 568         case 'u':       /* Server uptime */
 569         case 'U':
 570                 time_now = time(NULL) - NGIRCd_Start;
 571                 days = uptime_days(&time_now);
 572                 hrs = uptime_hrs(&time_now);
 573                 mins = uptime_mins(&time_now);
 574                 if (!IRC_WriteStrClient(from, RPL_STATSUPTIME, Client_ID(from),
 575                                        days, hrs, mins, (unsigned int)time_now))
 576                         return DISCONNECTED;
 577                 break;
 578         }
 579
 580         IRC_SetPenalty(from, 2);
 581         return IRC_WriteStrClient(from, RPL_ENDOFSTATS_MSG,
 582                                   Client_ID(from), query);
 583 } /* IRC_STATS */
 584
 585
 586 /**
 587  * Handler for the IRC command "SUMMON".
 588  * See RFC 2812 section 4.5. ngIRCd doesn't implement this functionality and
 589  * therefore answers with ERR_SUMMONDISABLED.
 590  */
 591 GLOBAL bool
 592 IRC_SUMMON(CLIENT * Client, REQUEST * Req)
 593 {
 594         return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG,
 595                                   Client_ID(Client), Req->command);
 596 } /* IRC_SUMMON */
 597
 598
 599 GLOBAL bool
 600 IRC_TIME( CLIENT *Client, REQUEST *Req )
 601 {
 602         CLIENT *from, *target;
 603         char t_str[64];
 604         time_t t;
 605
 606         assert( Client != NULL );
 607         assert( Req != NULL );
 608
 609         if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 610
 611         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 612         else from = Client;
 613         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 614
 615         if( Req->argc == 1 )
 616         {
 617                 target = Client_Search( Req->argv[0] );
 618                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[0] );
 619
 620                 if( target != Client_ThisServer( ))
 621                 {
 622                         return IRC_WriteStrClientPrefix( target, from, "TIME %s", Req->argv[0] );
 623                 }
 624         }
 625
 626         t = time( NULL );
 627         (void)strftime( t_str, 60, "%A %B %d %Y -- %H:%M %Z", localtime( &t ));
 628         return IRC_WriteStrClient( from, RPL_TIME_MSG, Client_ID( from ), Client_ID( Client_ThisServer( )), t_str );
 629 } /* IRC_TIME */
 630
 631
 632 GLOBAL bool
 633 IRC_USERHOST( CLIENT *Client, REQUEST *Req )
 634 {
 635         char rpl[COMMAND_LEN];
 636         CLIENT *c;
 637         int max, i;
 638
 639         assert( Client != NULL );
 640         assert( Req != NULL );
 641
 642         if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 643
 644         if( Req->argc > 5 ) max = 5;
 645         else max = Req->argc;
 646
 647         strlcpy( rpl, RPL_USERHOST_MSG, sizeof rpl );
 648         for( i = 0; i < max; i++ )
 649         {
 650                 c = Client_Search( Req->argv[i] );
 651                 if( c && ( Client_Type( c ) == CLIENT_USER ))
 652                 {
 653                         /* This Nick is "online" */
 654                         strlcat( rpl, Client_ID( c ), sizeof( rpl ));
 655                         if( Client_HasMode( c, 'o' )) strlcat( rpl, "*", sizeof( rpl ));
 656                         strlcat( rpl, "=", sizeof( rpl ));
 657                         if( Client_HasMode( c, 'a' )) strlcat( rpl, "-", sizeof( rpl ));
 658                         else strlcat( rpl, "+", sizeof( rpl ));
 659                         strlcat( rpl, Client_User( c ), sizeof( rpl ));
 660                         strlcat( rpl, "@", sizeof( rpl ));
 661                         strlcat( rpl, Client_Hostname( c ), sizeof( rpl ));
 662                         strlcat( rpl, " ", sizeof( rpl ));
 663                 }
 664         }
 665         ngt_TrimLastChr( rpl, ' ');
 666
 667         return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
 668 } /* IRC_USERHOST */
 669
 670
 671 /**
 672  * Handler for the IRC command "USERS".
 673  * See RFC 2812 section 4.6. As suggested there the command is disabled.
 674  */
 675 GLOBAL bool
 676 IRC_USERS(CLIENT * Client, REQUEST * Req)
 677 {
 678         return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG,
 679                                   Client_ID(Client), Req->command);
 680 } /* IRC_USERS */
 681
 682
 683 GLOBAL bool
 684 IRC_VERSION( CLIENT *Client, REQUEST *Req )
 685 {
 686         CLIENT *target, *prefix;
 687
 688         assert( Client != NULL );
 689         assert( Req != NULL );
 690
 691         if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 692
 693         /* Ziel suchen */
 694         if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
 695         else target = Client_ThisServer( );
 696
 697         /* Prefix ermitteln */
 698         if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix );
 699         else prefix = Client;
 700         if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 701
 702         /* An anderen Server weiterleiten? */
 703         if( target != Client_ThisServer( ))
 704         {
 705                 if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] );
 706
 707                 /* forwarden */
 708                 IRC_WriteStrClientPrefix( target, prefix, "VERSION %s", Req->argv[0] );
 709                 return CONNECTED;
 710         }
 711
 712         /* send version information */
 713         IRC_SetPenalty(Client, 1);
 714         return IRC_WriteStrClient(Client, RPL_VERSION_MSG, Client_ID(prefix),
 715                                   PACKAGE_NAME, PACKAGE_VERSION,
 716                                   NGIRCd_DebugLevel, Conf_ServerName,
 717                                   NGIRCd_VersionAddition);
 718 } /* IRC_VERSION */
 719
 720
 721 static bool
 722 write_whoreply(CLIENT *Client, CLIENT *c, const char *channelname, const char *flags)
 723 {
 724         return IRC_WriteStrClient(Client, RPL_WHOREPLY_MSG, Client_ID(Client), channelname,
 725                         Client_User(c), Client_Hostname(c), Client_ID(Client_Introducer(c)), Client_ID(c),
 726                         flags, Client_Hops(c), Client_Info(c));
 727 }
 728
 729
 730 static const char *
 731 who_flags_status(const char *client_modes)
 732 {
 733         if (strchr(client_modes, 'a'))
 734                 return "G"; /* away */
 735         return "H";
 736 }
 737
 738
 739 static const char *
 740 who_flags_qualifier(const char *chan_user_modes)
 741 {
 742         if (strchr(chan_user_modes, 'o'))
 743                 return "@";
 744         else if (strchr(chan_user_modes, 'v'))
 745                 return "+";
 746         return "";
 747 }
 748
 749
 750 static bool
 751 IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
 752 {
 753         bool is_visible, is_member, is_ircop;
 754         CL2CHAN *cl2chan;
 755         const char *client_modes;
 756         const char *chan_user_modes;
 757         char flags[8];
 758         CLIENT *c;
 759
 760         assert( Client != NULL );
 761         assert( Chan != NULL );
 762
 763         is_member = Channel_IsMemberOf(Chan, Client);
 764
 765         /* Secret channel? */
 766         if (!is_member && strchr(Channel_Modes(Chan), 's'))
 767                 return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 768
 769         cl2chan = Channel_FirstMember(Chan);
 770         for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) {
 771                 c = Channel_GetClient(cl2chan);
 772
 773                 client_modes = Client_Modes(c);
 774                 is_ircop = strchr(client_modes, 'o') != NULL;
 775                 if (OnlyOps && !is_ircop)
 776                         continue;
 777
 778                 is_visible = strchr(client_modes, 'i') == NULL;
 779                 if (is_member || is_visible) {
 780                         strcpy(flags, who_flags_status(client_modes));
 781                         if (is_ircop)
 782                                 strlcat(flags, "*", sizeof(flags));
 783
 784                         chan_user_modes = Channel_UserModes(Chan, c);
 785                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 786
 787                         if (!write_whoreply(Client, c, Channel_Name(Chan), flags))
 788                                 return DISCONNECTED;
 789                 }
 790         }
 791         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
 792 } /* IRC_Send_WHO */
 793
 794
 795 GLOBAL bool
 796 IRC_WHO( CLIENT *Client, REQUEST *Req )
 797 {
 798         bool only_ops, have_arg, client_match;
 799         const char *channelname, *client_modes, *chan_user_modes;
 800         char pattern[COMMAND_LEN];
 801         char flags[4];
 802         CL2CHAN *cl2chan;
 803         CHANNEL *chan, *cn;
 804         CLIENT *c;
 805
 806         assert( Client != NULL );
 807         assert( Req != NULL );
 808
 809         if (Req->argc > 2)
 810                 return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 811
 812         only_ops = false;
 813         have_arg = false;
 814
 815         if (Req->argc == 2) {
 816                 if (strcmp(Req->argv[1], "o") == 0)
 817                         only_ops = true;
 818 #ifdef STRICT_RFC
 819                 else return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 820 #endif
 821         }
 822
 823         IRC_SetPenalty(Client, 1);
 824         if (Req->argc >= 1) { /* Channel or Mask. */
 825                 chan = Channel_Search(Req->argv[0]);
 826                 if (chan)
 827                         return IRC_Send_WHO(Client, chan, only_ops);
 828                 if (strcmp(Req->argv[0], "0") != 0) { /* RFC stupidity, same as no arguments */
 829                         have_arg = true;
 830                         strlcpy(pattern, Req->argv[0], sizeof(pattern));
 831                         ngt_LowerStr(pattern);
 832                         IRC_SetPenalty(Client, 3);
 833                 }
 834         }
 835
 836         for (c = Client_First(); c != NULL; c = Client_Next(c)) {
 837                 if (Client_Type(c) != CLIENT_USER)
 838                         continue;
 839                  /*
 840                   * RFC 2812, 3.6.1:
 841                   * In the absence of the parameter, all visible (users who aren't
 842                   * invisible (user mode +i) and who don't have a common channel
 843                   * with the requesting client) are listed.
 844                   *
 845                   * The same result can be achieved by using a [sic] of "0"
 846                   * or any wildcard which will end up matching every visible user.
 847                   *
 848                   * The [sic] passed to WHO is matched against users' host, server, real name and
 849                   * nickname if the channel cannot be found.
 850                   */
 851                 client_modes = Client_Modes(c);
 852                 if (strchr(client_modes, 'i'))
 853                         continue;
 854
 855                 if (only_ops && !strchr(client_modes, 'o'))
 856                         continue;
 857
 858                 if (have_arg) { /* match pattern against user host/server/name/nick */
 859                         client_match = MatchCaseInsensitive(pattern, Client_Hostname(c)); /* user's host */
 860                         if (!client_match)
 861                                 client_match = MatchCaseInsensitive(pattern, Client_ID(Client_Introducer(c))); /* server */
 862                         if (!client_match)
 863                                 client_match = Match(Req->argv[0], Client_Info(c)); /* realname */
 864                         if (!client_match)
 865                                 client_match = MatchCaseInsensitive(pattern, Client_ID(c)); /* nick name */
 866
 867                         if (!client_match) /* This isn't the client you're looking for */
 868                                 continue;
 869                 }
 870
 871                 strcpy(flags, who_flags_status(client_modes));
 872
 873                 if (strchr(client_modes, 'o')) /* this client is an operator */
 874                         strlcat(flags, "*", sizeof(flags));
 875
 876                 /* Search suitable channel */
 877                 cl2chan = Channel_FirstChannelOf(c);
 878                 while (cl2chan) {
 879                         cn = Channel_GetChannel(cl2chan);
 880                         if (Channel_IsMemberOf(cn, Client) ||
 881                                     !strchr(Channel_Modes(cn), 's'))
 882                         {
 883                                 channelname = Channel_Name(cn);
 884                                 break;
 885                         }
 886                         cl2chan = Channel_NextChannelOf(c, cl2chan);
 887                 }
 888                 if (cl2chan) {
 889                         chan = Channel_GetChannel(cl2chan);
 890                         chan_user_modes = Channel_UserModes(chan, c);
 891                         strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
 892                 } else
 893                         channelname = "*";
 894
 895                 if (!write_whoreply(Client, c, channelname, flags))
 896                         return DISCONNECTED;
 897         }
 898
 899         if (Req->argc > 0)
 900                 channelname = Req->argv[0];
 901         else
 902                 channelname = "*";
 903
 904         return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), channelname);
 905 } /* IRC_WHO */
 906
 907
 908 GLOBAL bool
 909 IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 910 {
 911         CLIENT *from, *target, *c;
 912         char str[LINE_LEN + 1];
 913         CL2CHAN *cl2chan;
 914         CHANNEL *chan;
 915
 916         assert( Client != NULL );
 917         assert( Req != NULL );
 918
 919         /* Bad number of parameters? */
 920         if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 921
 922         /* Search client */
 923         c = Client_Search( Req->argv[Req->argc - 1] );
 924         if(( ! c ) || ( Client_Type( c ) != CLIENT_USER )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[Req->argc - 1] );
 925
 926         /* Search sender of the WHOIS */
 927         if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
 928         else from = Client;
 929         if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
 930
 931         /* Forward to other server? */
 932         if( Req->argc > 1 )
 933         {
 934                 /* Search target server (can be specified as nick of that server!) */
 935                 target = Client_Search( Req->argv[0] );
 936                 if( ! target ) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
 937         }
 938         else target = Client_ThisServer( );
 939
 940         assert( target != NULL );
 941
 942         if(( Client_NextHop( target ) != Client_ThisServer( )) && ( Client_Type( Client_NextHop( target )) == CLIENT_SERVER )) return IRC_WriteStrClientPrefix( target, from, "WHOIS %s :%s", Req->argv[0], Req->argv[1] );
 943
 944         /* Nick, user and name */
 945         if( ! IRC_WriteStrClient( from, RPL_WHOISUSER_MSG, Client_ID( from ), Client_ID( c ), Client_User( c ), Client_Hostname( c ), Client_Info( c ))) return DISCONNECTED;
 946
 947         /* Server */
 948         if( ! IRC_WriteStrClient( from, RPL_WHOISSERVER_MSG, Client_ID( from ), Client_ID( c ), Client_ID( Client_Introducer( c )), Client_Info( Client_Introducer( c )))) return DISCONNECTED;
 949
 950         /* Channels */
 951         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 952         cl2chan = Channel_FirstChannelOf( c );
 953         while( cl2chan )
 954         {
 955                 chan = Channel_GetChannel( cl2chan );
 956                 assert( chan != NULL );
 957
 958                 /* next */
 959                 cl2chan = Channel_NextChannelOf( c, cl2chan );
 960
 961                 /* Secret channel? */
 962                 if (strchr(Channel_Modes(chan), 's')
 963                     && !Channel_IsMemberOf(chan, Client))
 964                         continue;
 965
 966                 /* Local channel and request is not from a user? */
 967                 if (Client_Type(Client) == CLIENT_SERVER
 968                     && Channel_IsLocal(chan))
 969                         continue;
 970
 971                 /* Concatenate channel names */
 972                 if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
 973                 if( strchr( Channel_UserModes( chan, c ), 'o' )) strlcat( str, "@", sizeof( str ));
 974                 else if( strchr( Channel_UserModes( chan, c ), 'v' )) strlcat( str, "+", sizeof( str ));
 975                 strlcat( str, Channel_Name( chan ), sizeof( str ));
 976
 977                 if( strlen( str ) > ( LINE_LEN - CHANNEL_NAME_LEN - 4 ))
 978                 {
 979                         /* Line becomes too long: send it! */
 980                         if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 981                         snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c ));
 982                 }
 983         }
 984         if( str[strlen( str ) - 1] != ':')
 985         {
 986                 /* There is data left to send: */
 987                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
 988         }
 989
 990         /* IRC-Operator? */
 991         if( Client_HasMode( c, 'o' ))
 992         {
 993                 if( ! IRC_WriteStrClient( from, RPL_WHOISOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED;
 994         }
 995
 996         /* Idle and signon time (local clients only!) */
 997         if (Client_Conn(c) > NONE ) {
 998                 if (! IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
 999                         Client_ID(from), Client_ID(c),
1000                         (unsigned long)Conn_GetIdle(Client_Conn(c)),
1001                         (unsigned long)Conn_GetSignon(Client_Conn(c))))
1002                                 return DISCONNECTED;
1003         }
1004
1005         /* Away? */
1006         if( Client_HasMode( c, 'a' ))
1007         {
1008                 if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( c ), Client_Away( c ))) return DISCONNECTED;
1009         }
1010
1011         /* End of Whois */
1012         return IRC_WriteStrClient( from, RPL_ENDOFWHOIS_MSG, Client_ID( from ), Client_ID( c ));
1013 } /* IRC_WHOIS */
1014
1015
1016 static bool
1017 WHOWAS_EntryWrite(CLIENT *prefix, WHOWAS *entry)
1018 {
1019         char t_str[60];
1020
1021         (void)strftime(t_str, sizeof(t_str), "%a %b %d %H:%M:%S %Y",
1022                                         localtime(&entry->time));
1023
1024         if (!IRC_WriteStrClient(prefix, RPL_WHOWASUSER_MSG, Client_ID(prefix),
1025                         entry->id, entry->user, entry->host, entry->info))
1026                                 return DISCONNECTED;
1027
1028         return IRC_WriteStrClient(prefix, RPL_WHOISSERVER_MSG, Client_ID(prefix),
1029                   entry->id, entry->server, t_str);
1030 }
1031
1032 /**
1033  * IRC "WHOWAS" function.
1034  * This function implements the IRC command "WHOWHAS". It handles local
1035  * requests and request that should be forwarded to other servers.
1036  */
1037 GLOBAL bool
1038 IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
1039 {
1040         CLIENT *target, *prefix;
1041         WHOWAS *whowas;
1042         char tok_buf[COMMAND_LEN];
1043         int max, last, count, i, nc;
1044         const char *nick;
1045
1046         assert( Client != NULL );
1047         assert( Req != NULL );
1048
1049         /* Wrong number of parameters? */
1050         if (Req->argc > 3)
1051                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
1052                                         Client_ID(Client), Req->command);
1053         if (Req->argc < 1)
1054                 return IRC_WriteStrClient(Client, ERR_NONICKNAMEGIVEN_MSG, Client_ID(Client));
1055
1056         /* Search target */
1057         if (Req->argc == 3)
1058                 target = Client_Search(Req->argv[2]);
1059         else
1060                 target = Client_ThisServer();
1061
1062         /* Get prefix */
1063         if (Client_Type(Client) == CLIENT_SERVER)
1064                 prefix = Client_Search(Req->prefix);
1065         else
1066                 prefix = Client;
1067
1068         if (!prefix)
1069                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
1070                                                 Client_ID(Client), Req->prefix);
1071
1072         /* Forward to other server? */
1073         if (target != Client_ThisServer()) {
1074                 if (!target || (Client_Type(target) != CLIENT_SERVER))
1075                         return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG,
1076                                         Client_ID(prefix), Req->argv[2]);
1077
1078                 /* Forward */
1079                 IRC_WriteStrClientPrefix( target, prefix, "WHOWAS %s %s %s",
1080                                           Req->argv[0], Req->argv[1],
1081                                           Req->argv[2] );
1082                 return CONNECTED;
1083         }
1084
1085         whowas = Client_GetWhowas( );
1086         last = Client_GetLastWhowasIndex( );
1087         if (last < 0)
1088                 last = 0;
1089
1090         max = DEFAULT_WHOWAS;
1091         if (Req->argc > 1) {
1092                 max = atoi(Req->argv[1]);
1093                 if (max < 1)
1094                         max = MAX_WHOWAS;
1095         }
1096
1097         /*
1098          * Break up the nick argument into a list of nicks, if applicable
1099          * Can't modify Req->argv[0] because we need it for RPL_ENDOFWHOWAS_MSG.
1100          */
1101         strlcpy(tok_buf, Req->argv[0], sizeof(tok_buf));
1102         nick = strtok(tok_buf, ",");
1103
1104         for (i=last, count=0; nick != NULL ; nick = strtok(NULL, ",")) {
1105                 nc = 0;
1106                 do {
1107                         /* Used entry? */
1108                         if (whowas[i].time > 0 && strcasecmp(nick, whowas[i].id) == 0) {
1109                                 if (!WHOWAS_EntryWrite(prefix, &whowas[i]))
1110                                         return DISCONNECTED;
1111                                 nc++;
1112                                 count++;
1113                         }
1114                         /* previous entry */
1115                         i--;
1116
1117                         /* "underflow", wrap around */
1118                         if (i < 0)
1119                                 i = MAX_WHOWAS - 1;
1120
1121                         if (nc && count >= max)
1122                                 break;
1123                 } while (i != last);
1124
1125                 if (nc == 0 && !IRC_WriteStrClient(prefix, ERR_WASNOSUCHNICK_MSG,
1126                                                 Client_ID(prefix), nick))
1127                         return DISCONNECTED;
1128         }
1129         return IRC_WriteStrClient(prefix, RPL_ENDOFWHOWAS_MSG, Client_ID(prefix), Req->argv[0]);
1130 } /* IRC_WHOWAS */
1131
1132
1133 GLOBAL bool
1134 IRC_Send_LUSERS( CLIENT *Client )
1135 {
1136         unsigned long cnt;
1137 #ifndef STRICT_RFC
1138         unsigned long max;
1139 #endif
1140
1141         assert( Client != NULL );
1142
1143         /* Users, services and serevers in the network */
1144         if( ! IRC_WriteStrClient( Client, RPL_LUSERCLIENT_MSG, Client_ID( Client ), Client_UserCount( ), Client_ServiceCount( ), Client_ServerCount( ))) return DISCONNECTED;
1145
1146         /* Number of IRC operators */
1147         cnt = Client_OperCount( );
1148         if( cnt > 0 )
1149         {
1150                 if( ! IRC_WriteStrClient( Client, RPL_LUSEROP_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1151         }
1152
1153         /* Unknown connections */
1154         cnt = Client_UnknownCount( );
1155         if( cnt > 0 )
1156         {
1157                 if( ! IRC_WriteStrClient( Client, RPL_LUSERUNKNOWN_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
1158         }
1159
1160         /* Number of created channels */
1161         if( ! IRC_WriteStrClient( Client, RPL_LUSERCHANNELS_MSG, Client_ID( Client ), Channel_Count( ))) return DISCONNECTED;
1162
1163         /* Number of local users, services and servers */
1164         if( ! IRC_WriteStrClient( Client, RPL_LUSERME_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyServiceCount( ), Client_MyServerCount( ))) return DISCONNECTED;
1165
1166 #ifndef STRICT_RFC
1167         /* Maximum number of local users */
1168         cnt = Client_MyUserCount();
1169         max = Client_MyMaxUserCount();
1170         if (! IRC_WriteStrClient(Client, RPL_LOCALUSERS_MSG, Client_ID(Client),
1171                         cnt, max, cnt, max))
1172                 return DISCONNECTED;
1173         /* Maximum number of users in the network */
1174         cnt = Client_UserCount();
1175         max = Client_MaxUserCount();
1176         if(! IRC_WriteStrClient(Client, RPL_NETUSERS_MSG, Client_ID(Client),
1177                         cnt, max, cnt, max))
1178                 return DISCONNECTED;
1179 #endif
1180
1181         return CONNECTED;
1182 } /* IRC_Send_LUSERS */
1183
1184
1185 static bool
1186 Show_MOTD_Start(CLIENT *Client)
1187 {
1188         return IRC_WriteStrClient(Client, RPL_MOTDSTART_MSG,
1189                 Client_ID( Client ), Client_ID( Client_ThisServer( )));
1190 }
1191
1192 static bool
1193 Show_MOTD_Sendline(CLIENT *Client, const char *msg)
1194 {
1195         return IRC_WriteStrClient(Client, RPL_MOTD_MSG, Client_ID( Client ), msg);
1196 }
1197
1198 static bool
1199 Show_MOTD_End(CLIENT *Client)
1200 {
1201         return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client ));
1202 }
1203
1204 #ifdef SSL_SUPPORT
1205 static bool Show_MOTD_SSLInfo(CLIENT *Client)
1206 {
1207         bool ret = true;
1208         char buf[COMMAND_LEN] = "Connected using Cipher ";
1209
1210         if (!Conn_GetCipherInfo(Client_Conn(Client), buf + 23, sizeof buf - 23))
1211                 return true;
1212
1213         if (!Show_MOTD_Sendline(Client, buf))
1214                 ret = false;
1215
1216         return ret;
1217 }
1218 #else
1219 static inline bool Show_MOTD_SSLInfo(UNUSED CLIENT *c) { return true; }
1220 #endif
1221
1222 GLOBAL bool
1223 IRC_Show_MOTD( CLIENT *Client )
1224 {
1225         char line[127];
1226         FILE *fd;
1227
1228         assert( Client != NULL );
1229
1230         if (Conf_MotdPhrase[0]) {
1231                 if (!Show_MOTD_Start(Client))
1232                         return DISCONNECTED;
1233                 if (!Show_MOTD_Sendline(Client, Conf_MotdPhrase))
1234                         return DISCONNECTED;
1235                 goto out;
1236         }
1237
1238         fd = fopen( Conf_MotdFile, "r" );
1239         if( ! fd ) {
1240                 Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno ));
1241                 if (Conn_UsesSSL(Client_Conn(Client))) {
1242                         if (!Show_MOTD_Start(Client))
1243                                 return DISCONNECTED;
1244                         goto out;
1245                 }
1246                 return IRC_WriteStrClient( Client, ERR_NOMOTD_MSG, Client_ID( Client ) );
1247         }
1248
1249         if (!Show_MOTD_Start( Client )) {
1250                 fclose(fd);
1251                 return false;
1252         }
1253
1254         while (fgets( line, (int)sizeof line, fd )) {
1255                 ngt_TrimLastChr( line, '\n');
1256
1257                 if( ! Show_MOTD_Sendline( Client, line)) {
1258                         fclose( fd );
1259                         return false;
1260                 }
1261         }
1262         fclose(fd);
1263 out:
1264         if (!Show_MOTD_SSLInfo(Client))
1265                 return DISCONNECTED;
1266         return Show_MOTD_End(Client);
1267 } /* IRC_Show_MOTD */
1268
1269
1270 GLOBAL bool
1271 IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan )
1272 {
1273         bool is_visible, is_member;
1274         char str[LINE_LEN + 1];
1275         CL2CHAN *cl2chan;
1276         CLIENT *cl;
1277
1278         assert( Client != NULL );
1279         assert( Chan != NULL );
1280
1281         if( Channel_IsMemberOf( Chan, Client )) is_member = true;
1282         else is_member = false;
1283
1284         /* Secret channel? */
1285         if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED;
1286
1287         /* Alle Mitglieder suchen */
1288         snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1289         cl2chan = Channel_FirstMember( Chan );
1290         while( cl2chan )
1291         {
1292                 cl = Channel_GetClient( cl2chan );
1293
1294                 if( strchr( Client_Modes( cl ), 'i' )) is_visible = false;
1295                 else is_visible = true;
1296
1297                 if( is_member || is_visible )
1298                 {
1299                         /* Nick anhaengen */
1300                         if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
1301                         if( strchr( Channel_UserModes( Chan, cl ), 'o' )) strlcat( str, "@", sizeof( str ));
1302                         else if( strchr( Channel_UserModes( Chan, cl ), 'v' )) strlcat( str, "+", sizeof( str ));
1303                         strlcat( str, Client_ID( cl ), sizeof( str ));
1304
1305                         if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
1306                         {
1307                                 /* Zeile wird zu lang: senden! */
1308                                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1309                                 snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
1310                         }
1311                 }
1312
1313                 /* naechstes Mitglied suchen */
1314                 cl2chan = Channel_NextMember( Chan, cl2chan );
1315         }
1316         if( str[strlen( str ) - 1] != ':')
1317         {
1318                 /* Es sind noch Daten da, die gesendet werden muessen */
1319                 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
1320         }
1321
1322         return CONNECTED;
1323 } /* IRC_Send_NAMES */
1324
1325
1326
1327 /**
1328  * Send the ISUPPORT numeric (005).
1329  * This numeric indicates the features that are supported by this server.
1330  * See <http://www.irc.org/tech_docs/005.html> for details.
1331  */
1332 GLOBAL bool
1333 IRC_Send_ISUPPORT PARAMS((CLIENT * Client))
1334 {
1335         if (!IRC_WriteStrClient(Client, RPL_ISUPPORT1_MSG, Client_ID(Client),
1336                                 Conf_MaxJoins))
1337                 return DISCONNECTED;
1338         return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client),
1339                                   CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1,
1340                                   COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1,
1341                                   COMMAND_LEN - 113);
1342 } /* IRC_Send_ISUPPORT */
1343
1344
1345 /* -eof- */